U4440 Temperature, humidity, CO2 and atmospheric pressure data logger with built-in sensors

Technical data

• Measured value
• Temperature
• Relative humidity
• Counted values ​​(dew point...)
• CO2
• Atmospheric pressure
  

TEMPERATURE SENSOR

• Measuring range -20 to +60 °C
• Accuracy ±0.4 °C
• Resolution 0.1 °C
  

HUMIDITY SENSOR

• Measuring range 0 to 100 % RH
• Accuracy ± 1.8 % RH
• Resolution 0.1 % RH

DEW POINT

• Measuring range -60 to +60 °C
• Accuracy ±1.5 °C at ambient temperature T <25 °C and RH >30 %
• Resolution 0.1 °C

CO2 SENSOR

• Measuring range 0 to 5000 ppm
• Accuracy ±(50 ppm +3 % of reading) at 25 °C and 1013 hPa
• Resolution 1 ppm

ATMOSPHERIC PRESSURE SENSOR

• Measuring range 700 to 1100 hPa
• Accuracy ±1.3 hPa at 23 °C from 800 to 1100 hPa
• Resolution 0.1 hPa
  

GENERAL TECHNICAL DATA

• Operating temperature -20 to +60 °C
• Internal channel sensor for temperature, humidity, CO2 and
• atmospheric pressure
• Memory 500,000 values ​​in non-cyclic recording mode; 350,000 values ​​in cyclic logging mode
• Logging interval adjustable from 1 s to 24 h
• Display and alarm update adjustable 1 s, 10 s, 1 min
• Non-cyclic logging mode: data logging stops after memory is full
• Cyclic: after memory is full, oldest data is overwritten with new data
• Real-time clock: year, leap year, month, day, hour, minute, second
• Power battery SONY LiIon 5200mAh
• Protection class IP20
• Dimensions 61 x 93 x 53 mm
• Weight (including batteries): approx. 250 g
• Warranty 3 years